Hen house door mechanism



FIG. 1 is a front elevation view of a hen house door mechanism showing my new ornamental design.

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines shown represent portions of the hen house door mechanism that form no part of the claimed design. 

CLAIM The ornamental design for a hen house door mechanism, as shown and described. 